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6 Conditional Statements
in JavaScript
Let’s surf
Conditional Statements
Let’s PLug-in
If a = 8, b = 2 and c = 20, then what will be the output of the following statements:
1. document.write(a > b && b < c) = ____________________
2. document.write (a * b + c) = ____________________
3. document.write (a/b + c) = ____________________
4. document.write (a > b || b > c) = ____________________
5. document.write (a * b - 2 + c) = ____________________
There are situations in life when we need to decide something based on a situation. For example, if it
rains, I will stay at home or else I shall visit the market. Similar situations arise in programming as well,
where we need to make some decisions and based on these decisions, execute a set of commands.
We need to determine which action is to be taken and which statement is to be executed, if the
outcome is true or false. In this chapter, we will learn about conditional statements of JavaScript.
CONDITIONAL STATEMENTS
Decision making in JavaScript is done by called conditional statements which decide the flow of
program execution. The following conditional statements are available in JavaScript:
• if statement
• if...else statement
• Nested if statement
• Switch statement
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